NavigationBarUtil.java

package com.sun.bingo.util;

import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.ViewConfiguration;

/**
 * Created by sunfusheng on 16/7/29.
 */
public class NavigationBarUtil {

    // 判断设备是否有返回键、菜单键来确定是否有 NavigationBar
    public static boolean hasNavigationBar(Context context) {
        boolean hasMenuKey = ViewConfiguration.get(context).hasPermanentMenuKey();
        boolean hasBackKey = KeyCharacterMap.deviceHasKey(KeyEvent.KEYCODE_BACK);
        if (!hasMenuKey && !hasBackKey) {
            return true;
        }
        return false;
    }

    // 获取 NavigationBar 的高度
    public static int getNavigationBarHeight(Activity activity) {
        Resources resources = activity.getResources();
        int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
        return resources.getDimensionPixelSize(resourceId);
    }

}